The code name for a British operation conducted at the end of World War II at Farm Hall, Godmanchester, in Cambridgeshire, to extract information from 10 captured German physicists. The scientists were accommodated for six months in a large country house that had been wired for sound, and the most private conversations conducted among the detainees were recorded for analysis. The transcripts proved the enemy had not come close to developing an atomic bomb, had not misled their interrogators, and had been shocked by the news that the Allies had dropped nuclear weapons on Hiroshima and Nagasaki.